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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Completed No phase listed Observational Accepts healthy volunteers

Positron Emission Tomography to Measure Pain and Pain Control

NCT00001307
View directory record Official record
Conditions
Healthy, Hyperalgesia, Pain, Peripheral Nervous System Disease
Interventions
Oxygen-15 Water, Capsaicin
Drug
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
Not listed
Enrollment
273 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 2Phase 3 Interventional

NGX-4010 for the Treatment of Postherpetic Neuralgia

NCT00061776
View directory record Official record
Conditions
Herpes Zoster, Neuralgia, Pain, Peripheral Nervous System Diseases, Shingles
Interventions
Capsaicin Dermal Patch
Drug
Lead sponsor
NeurogesX
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
28
States / cities
Huntsville, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 25 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2008 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 4 Interventional

Capsaicin for the Treatment of Cannabinoid Hyperemesis Syndrome

NCT04283292
View directory record Official record
Conditions
Cannabinoid Hyperemesis Syndrome
Interventions
Capsaicin, Placebo
Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 17, 2024 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Neurobiology of Expectancy and Pain Perception

NCT01575106
View directory record Official record
Conditions
Pain
Interventions
Heat pain applied using TSA or CHEPS
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
21 Years to 50 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Charlestown, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 12, 2017 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 1 Interventional

Sickle Cell Pain: Intervention With Capsaicin Exposure

NCT03899246
View directory record Official record
Conditions
Neuropathic Pain, Sickle Cell Disease
Interventions
Eight Percent Topical Capsaicin
Drug
Lead sponsor
Children's Hospital of Michigan
Other
Eligibility
14 Years to 21 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 28, 2020 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate Efficacy and Safety of a Single Application of Capsaicin 8%Transdermal Delivery System Compared to Placebo in Reducing Pain Intensity in Subjects With Painful Diabetic Peripheral Neuropathy (PDPN)

NCT01533428
View directory record Official record
Conditions
Diabetic Peripheral Neuropathy, Pain
Interventions
Capsaicin 8%, Placebo
Drug
Lead sponsor
Astellas Pharma Inc
Industry
Eligibility
18 Years and older
Enrollment
369 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
29
States / cities
Anniston, Alabama • Fresno, California • Long Beach, California + 24 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2015 · Synced Sep 25, 2026, 11:01 PM EDT
Enrolling by invitation Phase 1 Interventional Accepts healthy volunteers

Pain Biomarker Study

NCT03511846
View directory record Official record
Conditions
Migraine, Cluster Headache, Trigeminal Autonomic Cephalgia, Hemicrania Continua, Paroxysmal Hemicrania, SUNCT, Short-Lasting Unilateral Neuralgiform Headache With Conjunctival Injection and Tearing
Interventions
Oral capsaicin, Topical capsaicin, Intranasal capsaicin, Cold Water Irrigation, Medical Air, Low Flow Oxygen, High Flow Oxygen
Drug · Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
371 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 2 Interventional

Study of NGX-4010 With the Use of Open Label Lidocaine (2.5%)/Prilocaine (2.5%) Cream for the Treatment of Postherpetic Neuralgia (PHN)

NCT00916942
View directory record Official record
Conditions
Postherpetic Neuralgia
Interventions
capsaicin 8%, Lidocaine (2.5%)/Prilocaine (2.5%) Cream
Drug
Lead sponsor
NeurogesX
Industry
Eligibility
18 Years to 90 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
6
States / cities
Naples, Florida • St. Petersburg, Florida • Marietta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 8, 2009 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Cough According to Stimulus Type in PD

NCT02390089
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Capsaicin vapor, fog, Videofluoroscopic swallow evaluation, Nebulizer
Drug · Other · Radiation + 1 more
Lead sponsor
University of Florida
Other
Eligibility
50 Years to 80 Years
Enrollment
158 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 14, 2019 · Synced Sep 25, 2026, 11:01 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Neuropeptide Y (NPY) Regulation of Nociceptors

NCT00596193
View directory record Official record
Conditions
Pain
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years to 50 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2008
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Mar 7, 2012 · Synced Sep 25, 2026, 11:01 PM EDT
Completed No phase listed Observational

Delineating Swallowing Impairment and Decline in ALS

NCT02962050
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
Videofluoroscopic Swallowing Study (VFSS), Voluntary Peak Cough Flow Testing, Iowa Oral Performance Instrument, Capsaicin Challenge, Pulmonary Function Testing, Eating Assessment Tool 10, The Center for Neurologic Study Bulbar Function Scale
Procedure · Device · Drug + 1 more
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 90 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
2
States / cities
Gainesville, Florida • Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 2 Interventional

Pilot Study of High-Dose Capsaicin Patches to Treat Postherpetic Neuralgia Pain

NCT00034710
View directory record Official record
Conditions
Neuralgia, Pain, Peripheral Nervous System Diseases, Herpes Zoster
Interventions
Capsaicin Patch
Drug
Lead sponsor
NeurogesX
Industry
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002
U.S. locations
8
States / cities
Phoenix, Arizona • Tucson, Arizona • Naples, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2006 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Neuromodulation of Lidocaine and Capsaicin Cream Effects on Pain Experience

NCT03102710
View directory record Official record
Conditions
Pain
Interventions
transcranial direct current stimulation (tDCS), Lidocaine cream, Capsaicin cream, Control cream
Device · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
21 Years to 50 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Charlestown, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 6, 2020 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Remote Ischemic Preconditioning Mechanism Study

NCT01541436
View directory record Official record
Conditions
Pain
Interventions
Remote Ischemic Preconditioning, Capsaicin, UV-B
Device
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2018 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Clinical Adhesion Study Between ZTlido 1.8% and Three Over-the-counter External Analgesic Lidocaine-containing Patches

NCT05106400
View directory record Official record
Conditions
Healthy
Interventions
ZTlido (Lidocaine Topical System) 1.8%, Salonpas (Lidocaine Patch 4%), Aspercreme (Lidocaine Patch 4%), IcyHot (Lidocaine 4% + Menthol 1% Patch)
Drug
Lead sponsor
Scilex Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Dilworth, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Sep 25, 2026, 11:01 PM EDT
Not listed Phase 2 Interventional

Pilot Study of High-Concentration Capsaicin Patches in the Treatment of Painful HIV-Associated Neuropathy

NCT00061152
View directory record Official record
Conditions
HIV Infections
Interventions
Capsaicin Dermal Patch
Drug
Lead sponsor
NeurogesX
Industry
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
3
States / cities
West Hollywood, California • New York, New York • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 13, 2007 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Acute Pain on Cognitive Performance in Young Adults

NCT05625776
View directory record Official record
Conditions
Pain, Acute, Cognition
Interventions
pain delivery with capsaicin and heat, distractor delivery with sensory TENS
Procedure
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 35 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Dec 10, 2023 · Synced Sep 25, 2026, 11:01 PM EDT
Recruiting Not applicable Interventional

Pain and Split-belt Motor Learning in Older Adults

NCT07054840
View directory record Official record
Conditions
Aging, Older Adults, Pain, Motor Learning
Interventions
Capsaicin 0.1% cream combined with a heat pack and applied to the lower leg
Behavioral
Lead sponsor
University of Delaware
Other
Eligibility
55 Years to 90 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Sep 25, 2026, 11:01 PM EDT
Terminated Phase 3 Interventional

Study of NGX-4010 for Treatment of Painful HIV-Associated Neuropathy

NCT00085761
View directory record Official record
Conditions
HIV Infections, Peripheral Nervous System Diseases, Pain
Interventions
Capsaicin Dermal Patch
Drug
Lead sponsor
NeurogesX
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
2
States / cities
Sarasota, Florida • Annandale, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 5, 2008 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 4 Interventional Results available

Osteoarthritis Knee Pain Relief Study of 0.25% 920-CGS-200

NCT03124407
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
Capsaicin Topical Solution, Drug product vehicle
Drug · Other
Lead sponsor
Propella Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
3
States / cities
Clearwater, Florida • Tampa, Florida • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 30, 2024 · Synced Sep 25, 2026, 11:01 PM EDT
Completed No phase listed Observational Results available

Airway Protective Mechanisms in PD (R01)

NCT03321019
View directory record Official record
Conditions
Parkinson Disease
Interventions
Capsaicin, Resistive respiratory loads, Event-related evoked potential using electroencephalography (EEG)., Fluoroscopic swallow evaluation
Drug · Device · Other + 1 more
Lead sponsor
University of Florida
Other
Eligibility
45 Years to 85 Years
Enrollment
119 participants
Timeline
2017 – 2023
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Sep 25, 2026, 11:01 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Salivary Interactions With Chemosensations

NCT03883880
View directory record Official record
Conditions
Diet, Food Choice, Taste
Interventions
Epigallocatechin gallate, Epigallocatechin gallate control, Linoleic acid, Linoleic acid control, Capsaicin solution, Capsaicin control
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Early Phase 1 Interventional Results available

Biomarker Study in Participants With Migraine

NCT02766517
View directory record Official record
Conditions
Migraine Disorders
Interventions
Capsaicin
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
Not listed
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
14
States / cities
Phoenix, Arizona • Encino, California • Glendale, California + 9 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2019 · Synced Sep 25, 2026, 11:01 PM EDT
Completed Phase 4 Interventional Results available

Antitussive Effect of a Naturally Flavored Syrup Containing Diphenhydramine, Compared With Dextromethorphan and Placebo

NCT02062710
View directory record Official record
Conditions
Cough Reflex Sensitivity
Interventions
diphenhydramine/phenylephrine/cocoa; dextromethorophan; placebo, diphenhydramine/phenylephrine/cocoa; placebo; dextromethorphan, dextromethorphan; diphenhydramine/phenylephrine/cocoa; placebo, dextromethorophan; placebo; diphenhydramine/phenylephrine/cocoa, placebo; diphenhydramine/phenylephrine/cocoa; dextromethorphan, placebo; dextromethorphan; diphenhydramine/phenylephrine/cocoa
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 27, 2018 · Synced Sep 25, 2026, 11:01 PM EDT